1200302412121 has 16 divisors (see below), whose sum is σ = 1275404936400. Its totient is φ = 1127454951168.

The previous prime is 1200302412109. The next prime is 1200302412161. The reversal of 1200302412121 is 1212142030021.

It can be written as a sum of positive squares in 8 ways, for example, as 322382025 + 1199980030096 = 17955^2 + 1095436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200302412121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200302412161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9479295 + ... + 9605083.

It is an arithmetic number, because the mean of its divisors is an integer number (79712808525).

Almost surely, 2^{1200302412121} is an apocalyptic number.

It is an amenable number.

1200302412121 is a deficient number, since it is larger than the sum of its proper divisors (75102524279).

1200302412121 is a wasteful number, since it uses less digits than its factorization.

1200302412121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134748.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1200302412121 its reverse (1212142030021), we get a palindrome (2412444442142).

The spelling of 1200302412121 in words is "one trillion, two hundred billion, three hundred two million, four hundred twelve thousand, one hundred twenty-one".